“We are continuing to investigate and hold those involved responsible for their actions and are confident in the progress made in our enquiries.
“We have a small, hard-working team [which] has been dedicated to piecing together the events that have unfolded leading up to Whitikau’s death in order to identify those responsible.”
A post-mortem has been completed in Christchurch, and a scene examination at the property on Orchard Street has now also been completed.
Police also remain interested in anyone who has seen or has information about a white BMW X5 station wagon with the registration BMW693.
Anyone who has seen that vehicle is encouraged to report it to police via 105, referencing file number 231110/4270, or Crimestoppers anonymously via 0800 555 111.